Environmental & Industrial Hygiene Services

Marijuana Industry Problem Solving

Management of Safety, Industrial Hygiene, and Extraction Technology in this New Industry.

Copyright Havelick & Associates LLC 2016. All rights reserved.


Certified Industrial Hygienist

Environmental Site Investigation & Cleanup 

Complex, Multiple Party, Radionuclides - We have successfully dealt with all of these. 

hal extraction

Linn Havelick has ceased active consulting work effective January 2019 to focus on his manufacturing enterprise, HAL Extraction Technology, Ltd. If you need industrial hygiene consulting support, please check with Jeff Pothast. For training and courses, please speak with Steve Baugh at QSP Sciences. For environmental expertise, contact Joe Aiken, JA Environmental


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HAL Extraction Technology Ltd. provides a revolutionary cost-saving approach to the construction of marijuana oil extraction facilities.